9. A hot-wire anemometer is a heated electric resistance placed in the pipe carry- ing the flow. King showed that the rate of heat transfer is proportional to the flow velocity as: o= (a + bvos Xr. -T, ) where constants a and b are determined from a calibration of the anemometer. The rate of heat transfer is also given by the electric power consumed to heat up the resistance: Q = R = R,[1+ a(T,wire – T, ]1? where I is the electric current, a is the temperature coefficient of resistance, and R. is the wire resistance at temperature T. Obtain flow velocity as a function of the electric current.

9. A hot-wire anemometer is a heated electric resistance placed in the pipe carry- ing the flow. King showed that the rate of heat transfer is proportional to the flow velocity as: o= (a + bvos Xr. -T, ) where constants a and b are determined from a calibration of the anemometer. The rate of heat transfer is also given by the electric power consumed to heat up the resistance: Q = R = R,[1+ a(T,wire – T, ]1? where I is the electric current, a is the temperature coefficient of resistance, and R. is the wire resistance at temperature T. Obtain flow velocity as a function of the electric current.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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